Machine for treating rubber and other heavy plastic material.



F. H. maunv. v

MACHINE FOR T REAT|NG RUBBER AND OTNER HEAVY PLASTIC MATERIAL.

APPLICATION FILED API- 20. I9]?- Patented Sept. 17, 1918."

, F. H. BANB URY MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTlC-MATERIM.

PatentedSept. 17, 1918.

rEmtLEY H, naniaunir, 'ors'xsoma, comncrxcur assrcizoa 'roia rnmmcnm molt rounnnr, or DERBY, conmacncu'r, a conclusion.

MACHINE ron Tamar-mo Bunsen am) ornnn nmvr rnasrx'd marnaxan;

To (ril -whom it may concern." 4

. Bejt known that I, Fnnxugr' H. B.\ 'llURY, a subject of the King of Great Britain, re-

siding at Ansonia, 1n the county of New -Haren and State of Connecticut, have-1nvented a new and useful Improvement in Machines for Treating Rubber and other. Heavy Plastic Material; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon,

" to be-a-ful'l, clear, and exact description of the same andj-which'said drawings constitached.

. Fig. 4a plan viewfif eos er de Fig. 5 a. plan view of its qs ei ne '1 This invention relates'to an improgement in machine for treating rubber andi'other heavy plastic materiah'and is animprove- .shown but not claimed" in applicationfiled November-18,1916, SerialNmf'13201'1."

' prove means ,for feeding material to be nient on the inaehinef'shown auddescribed in United States-Patent No. 1,200,010, dated October 3,' 1916; andZ-embodiesT-nfeatures The object of this'finventio'n -is$to treated, to provide 'a dust proof hopper from which the material is to befed,' to rovide a water cooled feeding-plate gr weig t,and

u to so proportion the parts offth'machine as 'to' secure the-most advantageous results in feeding and'treating; and {the invention consists in a machine havingjcertain details ofronstruction and combinations of parts as will be hereinafter descr'll d and particnlarly recited in the claims.

In carrying out my inventionas in the previous case; I employ a casing 6 comprismg two cvlmdrlcal chambers 7 and 8-21!- ranged side by side with their upper parts opening-into a connnunicating chamber 9. 'ithin the hambers 7 and 8 are rotary blades 10 and 11 suitably mounted to be rotated in the chambers. Above the chamber 9 and mounted thereon is a-.'f1'aine 12 hav in an opening in one side communicating with a hopper 13 so tln t material placed in "s ecification a Letter: s nt 1 P t t d 3, 1.7, i9 3,

-' Appl ication i1edApr il20,1917. seminaieatia' the hopper will. pass through theca-sing 12 Into the chamber 9 and'thence into the chambers 7 and 8. The chamber 9 and portion of the frame below the hopper-opening form a neck, and it" will be noted that the crosssectional width of the neck is no greater than the distance between the centersofthe'axes of the blades. Itis also; to be' noted that, the1length of the neck is equal toor greater t-han 1% times the"dianre'terof the rotary blades 10 and Hand thatf'the cross-sectional area of the neck is more, and at least 11 times the areas of the mixing chambers 7 and 8 excluding the. space occu ied by-the blades; To force-the material own, I. employ a weight similar-to that shown in-thee ap cation above referred "to, this weight 5 ing secured to a piston-god 15 which-enters a cylinderi16 and has'attahhed to it a piston; head 17 which may be'movedup'anddown,

by any desired force to'raise or: lower then g weight M.- Preferably the length of-the '9 neck-will be such as to .permit of'vertical' travel of the weight to an extent equal to.-

two or more times the diameter ojthe rotary T in blades. The le h of the-neck is the distance that the, ceding weight can-travel? through the neck where itfiB induced by four sides. In this case the weight IL is need? ling'se l t and 19 separated b a wall 20 w "c less" i not only as a. weight, butalsoasra plate and is formed with twoin length than the e hf-fif'thepas'sages 18;

tween the-two Passages i neand. From has alport 23 which 18 colip'ledwith'a flexible "and 19 so as to provi e oommunicationbe" .tl1e' passage, 18 a 'port21 extends upward through the top of theifweight and-with l whicha fiexibleplpe 22"=ma"y"extend to a 'source of water supply, while the passage 19 pipe 24' through which water may be discharged, thus I maintaining nthe circulation of water around the plate.

terial, is frequently used; and to prei cnt' this powder from esca ing, I provide a cover 25 for the hopper. l a wire frame 26 the ends 27 of which are turned inward to engage with holes formed for it in the sides of the hopper and over wa rubber, '1 'a powder, suchas lampblack, or 0 er ma is cover consists of' this wire frame is stretched a fabric oov-- ering 28 which, while prevehting the escape of dust will allow air to pass throughit so as not tointerfere with the feeding of material. By proportioninm'the neck to the size of the cylinders as above specified, 1

- facilitate the operation of feeding and treatinto the top of the chambers above the sai blades, .-the length of the neck being not less than the diameter of the rotary blades.

2. In a machine'of the class described, the

, combination with a double cylindrical chamber, of a rotary blade in each side of the chamber, and" a; contracted neck, opening into the top of the chambers above the said blades, the length of the neck being greater than the diameter of the rotary blades. 3. In' a machine of the class described, the combination with a; double cylindrical chamber, of a rotary blade in each side of' the chamber, and a contracted neck openin into the top of the chambers above the sai blades, the length of the neck being not less than 1 times the. diameter of the rotary blades. I

4. A-machine of the class described comprisin a double cylindrical chamber, blades insai chamber, and a neck opening into'the top of the said chamber the cubic capacity,

of the said *neck being not less than the cubic capacity of-the said chamber exclusive of the space occupied by .the said blades. 5-. A machine of the class described comprising a double cylindrical chamber, blades in said chamber, and a neck-opening into thetop of the said chamber, the cubic ,capacity of the said neck being greater than the cubic-capacity of the-said chamber exclusive'of the space occupied by the said blades,

6. A machine of the class decsribedcomprising a double cylindrical chambenbla'des in said chamber, and aneck opening into the top of the saidchamber, the cubic capacitycombination with a double cylindrical chamberand neck, of a weight movable in said neck, said weight formed with a cooling passage, and means 'for raising and lowermg the said weight.

8. In a-machine of the class described, the combination with a double cylindrical chamber and neck, of a weight movable in said neck, said weight formed with a' cooling passage, flexible pipes connecting with said passage, and means for raising and lowering the said' weight.

9. In a machincof the class described, the combination with a double cylindrical chamber, of a neck opening into the top of the said chamber, a hopper opening into said neck, and a feeding weight movable in said neck and adapted to force material delivered from the hopper into said chalhber and the length of the neck being greater than the diameter of the blades.

IO. A'ma'chine of the class described comprising a double cylindrical chamber and a neck havin straight sides, a blade mounted in each si e of the chamber the cross-sectional width of the neck being less than the vhorizontal distance between the centers of the axes of the saidblade-s and the length of the neck being greater than the diameter the neck being less than the horizontal dis:

tance between the centers of the axes of the said blades, and a weight movable in said neck;

12. In a machine of the class described, the combination with a double cylindrical chamber, of a neck opening into the top of said chamber, a hopper opening into said neck, a cover for said hopper, said cover formed from dust-proof fabric substantially as described.

In testimony whereof I have signed this specification in the presence of two sub- .scriblng w1tnesses.

F. H. BANBURY.

\Vitnesses .FREDERIG C. EAnLE,

MALCOLM P. Nrcnons.

BIS 

